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  #1  
Old 01-10-2009, 02:12 PM
crazy_rhino_ride crazy_rhino_ride is offline
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Location: U.P. Michigan
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Default Rhino Backfiring

I just got the Hunterworks Tri-Fire Plus CDI it works great but my rhino will backfire hard when i let of the gas most of the time. Any thing i can do or fix?
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  #2  
Old 01-10-2009, 03:33 PM
timc timc is offline
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Location: Miramichi, New Brunswick, Canada
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Default Re: Rhino Backfiring

First I'd replace the fuel filter and check the head pipe for a crack - this will cause it to backfire when you let off the gas. Normally you don't have to rejet for only a CDI but I would put the stock CDI back on to see if it still backfires to eliminate that possibility.
Mine was doing that and my headpipe was cracked - just replaced it last week.
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2007 Rhino Sport Edition, 3K Warn Winch, 27" Bighorns on ITP SS Wheels and spacers, Dynatek CDI, HW Sheave, HID's, Dragonfire Billet intake, Pro Armor A-Arm Guards and Diff guard
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  #3  
Old 01-10-2009, 03:54 PM
crazy_rhino_ride crazy_rhino_ride is offline
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Default Re: Rhino Backfiring

My exhaust leaks very little where the header pipe conects to the mufler. Will that do it? I just put the Hunterworks CDI on and it only backfired a few times since new. What does the fuel filter have to do with backfiring?
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  #4  
Old 01-10-2009, 04:08 PM
timc timc is offline
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Default Re: Rhino Backfiring

If the fuel filter plugs up it will run lean and cause it to backfire. Check the head pipe close to the head - thats where mine cracked. If it never backfired before the CDI and started as soon as you put it on, I'd switch back to the stock and try it to see if it still backfires. Also you can check the intake boot between the carb and head.
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2007 Rhino Sport Edition, 3K Warn Winch, 27" Bighorns on ITP SS Wheels and spacers, Dynatek CDI, HW Sheave, HID's, Dragonfire Billet intake, Pro Armor A-Arm Guards and Diff guard
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  #5  
Old 01-10-2009, 04:26 PM
crazy_rhino_ride crazy_rhino_ride is offline
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Default Re: Rhino Backfiring

I'll check it over and reply back later.
Thanks!
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2007 Yamaha Rhino 660 SE, Hunterworks CDI, Trinity Racing sheave.
2008 Honda 420 EFI, ITP Mud Lites + Wheels.
1994 yamaha Kodiak 400 4x4/ the beater, haha.
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  #6  
Old 01-10-2009, 08:33 PM
crazy_rhino_ride crazy_rhino_ride is offline
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Default Re: Rhino Backfiring

Ok, I checked the fuel filter and it was fine. There was no exhaust leak, and the boot on the carb was fine. I put the old CDI on and it don't backfire. When I barly hold the gas it sorta misses once and a while with bo CDI's, but the new one backfires when I let off the gas, the old one does not, can it be too little/ too much gas? Tuning?
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2007 Yamaha Rhino 660 SE, Hunterworks CDI, Trinity Racing sheave.
2008 Honda 420 EFI, ITP Mud Lites + Wheels.
1994 yamaha Kodiak 400 4x4/ the beater, haha.
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  #7  
Old 01-10-2009, 09:03 PM
Hunterworks Hunterworks is offline
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Location: Collinsville, MS
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Default Re: Rhino Backfiring

It has been a long time since someone has had to rejet. Sounds like it is lean on the pilot (idle) circuit.
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  #8  
Old 01-10-2009, 09:15 PM
crazy_rhino_ride crazy_rhino_ride is offline
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Default Re: Rhino Backfiring

Do you know what way to turn the screw? I was thinking it was lean too.
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2007 Yamaha Rhino 660 SE, Hunterworks CDI, Trinity Racing sheave.
2008 Honda 420 EFI, ITP Mud Lites + Wheels.
1994 yamaha Kodiak 400 4x4/ the beater, haha.
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  #9  
Old 01-10-2009, 09:47 PM
Hunterworks Hunterworks is offline
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Default Re: Rhino Backfiring

Out for more fuel, it has a brass plug over it.
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  #10  
Old 01-10-2009, 09:52 PM
crazy_rhino_ride crazy_rhino_ride is offline
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Default Re: Rhino Backfiring

does the plug come off? What plug is it? thanks im going to try that tomarrow.
__________________
2007 Yamaha Rhino 660 SE, Hunterworks CDI, Trinity Racing sheave.
2008 Honda 420 EFI, ITP Mud Lites + Wheels.
1994 yamaha Kodiak 400 4x4/ the beater, haha.
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